Diffusion is the separation of smaller molecules from larger molecules using a semi-permeable membrane. True or False
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1. Diffusion is the separation of smaller molecules from larger molecules using a semi-permeable membrane.
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- 1. Indicates whether the statement is true (T) or false (F). If the statement is wrong, rephrase it so that it is true. a) Glycogen is a lipid b) Passive transport moves substances against a concentration gradient. c) Starch is a disaccharide. d) Facilitated diffusion is an example of passive transport.What best explains the mechanism of old (and wicked dangerous) diet pills that acted as an uncoupling protein? Select one: a. it decreased efficiency of oxidative phosphorylation b. individuals would only perform anaerobic respiration c. it increased the concentration gradient of protons d. it decreased the kreb’s cycle e. it increased osmosis Clear my choice1. A bacterium that does not have all the enzymes of central metabolism: a. Will not be a viable cell and will quickly die b. Will not grow without being supplied precursor metabolites. c. Can produce all the precursor metabolites it needs from glucose d. Can produce all the precursor metabolites it needs from malate
- 1. It can separate large colloidal particles from small solute particles of a solution. a. Dialysis b. Facilitated diffusion c. Osmosis d. Diffusion 2. What force of interaction was cleaved in the addition of a reducing agent to the protein sample? a. Disulfide bonds b. hydrogen bond c. hydrophobic interactions d. ionic bond 3. The substance in the vinegar that dissolved the egg shell. a. calcium acetate b. calcium carbonate c. water d. acetic acid 4. As enzyme concentration increases, enzymatic activity increases provided the substrate concentration is constant. True or False 5. Diffusion is the separation of smaller molecules from larger molecules using a semi-permeable membrane. True or False9) The sum of all chemical reactions in your body defines: a) anabolism b) metabolism c) catabolism d) Cellular Respiration e) Biosynthesis10) If in a bacterial growth medium waste product accumulates than the bacterial growth stage will be called: a) Death b) Convalescence c) Lag phase d) Log e) StationaryWhich of the following statements about extracellular enzymes is FALSE? Question 1 options: A Extra cellular enzymes can be used to help identify certain bacteria B Bacteria must digest large food particles outside of the cell. C Exo- enzymes are digestive enzymes secreted from the cell to the exterior. D Protease, amylase, and caseinase are exo-enzymes E Few bacteria have the metabolic pathway to digest food sources other than glucose
- 1) Answer the following questions about a Vegetarian diet: a) List Pros and Cons of being on the diet. b) List any possible misconceptions that may have been verified or nullified by scientific articles for this diet. c) What biochemical pathway would this diet target?Read the following scenario and answer the associated questions. Hydrogen peroxide was added to a piece of potato and potatoes contain the enzyme, catalase. When hydrogen peroxide was added to the potato, bubbles appeared due to the presence of oxygen gas. The presence of the oxygen gas indicates that the catalase was breaking down the hydrogen peroxide into oxygen gas and water. If the hydrogen peroxide was removed and re-added to the potato, would bubbling occur again? Explain why or why not What do you think would happen if the potato in the above question was boiled before being placed into a container with hydrogen peroxide? Why is the reusability of enzymes important?1. Which substances are able to diffuse through dialysis tubing? Choose all that apply. - Protein - Glucose - Sodium chloride - Starch 2. In yeast, which culture(s) are able to demonstrate diffusion? (Choose one option below) A) Only the dead yeast culture demonstrated diffusion B) Both the alive and dead yeast culture demonstrated diffusion C) Only the alive yeast culture demonstrated diffusion D) Neither the alive nor dead yeast culture demonstrated diffusion 3. In yeast, which culture(s) demonstrate active transport? (Choose one option below) A) Only the alive yeast culture demonstrated active transport B) Neither the alive nor dead yeast culture demonstrated active transport C) Only the dead yeast culture demonstrated active transport D) Both the alive and dead yeast culture demonstrated active transport 4. In yeast, adenosine triphosphate (ATP) does not provide the energy for active transport to occur (True or False?) A) True B) False
- 1. Given the following words (Glycolysis, ATP yield, Oxidative phosphorylation), make a short explanation on how the given words connect to each other using the concepts in microbial metabolism. Answer this comprehensively.How does cholestrol affect membrane fluidity? 1- it tends to increase the fluidity 2- it doesn't have any specific effect on fluidity 3- membranes doesn't have cholesterol 4- it tends to decrease the fluidity4. Which one of the following requires an energy source? a. a large molecule transported with its concentrated gradient b. a large molecule transported using facilitated diffusion c. a large molecule that has to use pinocytosis d. a large molecule that chemically emulates water e. a large molecule that chemically emulates oxygen
